The Phantasma Theta is one of the bosses in Ceclia' story.
- WHEN: Cecilia's Story, Phase 5
- LOCATION: Fallen City Altair
- ASPECT: Cerulean Flame
- EXP/FP: 30000/1880
- Plasma Lance: Deals about 350 damage to a single Party Member.
- Shield Bowgun: Deals about 250 damage to a single Party Member, and has a chance of inflicting Seal status.
- Force Charge: Charges Force for Force Cannon
- Force Cannon: Unleashes charged Force dealing around 700 damage to the whole Party.
- Important to boost status: Rafael = Gemini Boost, Ignus = Warcry. After that, keep hitting with strong physical skills like Ogre Blade.
- As Shield Bowgun can seal one of your party, have Cecilia in your Party, for her Healing Baton cures seal statuses. Otherwise, use Spirifacts.
- Right after the Force Cannon, have Cecilia use Angel Tear on your Party.